Caldwell 99
C99
📋 A written introduction is coming — for now this page shows official values only.
Object
- Type (NASA)
- Absorption or Dark Nebula
- Distance from Earth
- 600 light-years
- NASA description
- Visible to the unaided eye as it obscures part of the Milky Way, dark Caldwell 99 is better known as the Coalsack Nebula.
Source:NASA Hubble (Messier/Caldwell catalogs) · checked 2026-11-02 ↗
Related
Constellation
In everyday life
- Light from this object takes about 600 years to reach Earth — the light you see tonight left around AD 1426 (official distance ÷ speed of light).
- It lies in Crux — find the constellation first to know where to look.
- Caldwell number 99 — guides call it «C99» (NASA Hubble Caldwell catalog).